Billybob44:
Your Model 586-1 Distinguished Combat Magnum to late 1987 or early 1988, probably December to January, with January more likely. It should have been a 586-2 by that point, obviously they were still transitioning.
The 586-1 is subject to a recall. With some magnum ammo the primer may flow back into the firing pin bushing and lock up the gun. Under the recall S&W will install a new firing pin and bushing and pay shipping both ways. Call customer service if you want your gun done.
If it has already been modified there will be an M stamped after or close to the model no. under the cylinder yoke cut out.
I live in Australia, so I'm not familiar with US prices. My gut feeling based on conversations on the board is that low would be $550, high would be $650. Better to start a new thread with pics and get a more realistic evaluation.
.455 Hunter:
Your Model 10-5 .38 Military & Police tapered barrel dates to 1969.
DAdams:
The number you have given is either an assembly number stamped by the factory to track parts or a departmental rack number applied after it was sold.
The serial number will be three letters and 4 numerals, eg: ABC1234. It will be on the bottom of the grip frame, it should also be under the cylinder yoke cut out.
dalehartog:
You have a Pre-Model 43 / Model of 1955 .22/.32 Kit Gun Airweight. it is an alloy frame & cylinder adjustable sight J frame. Put a magnet on the cylinder, it should drop off.
Introduced at serial number 5000 in 1954, by 1955 serial numbers had hit 11000, so I would go with 1954 and a first year of manufacture gun.
WaywardSon:
The N4xxxxx serial range was used in 1977 & 1978. The barrel length for those years should have been 6.5 inches, with a 6 inch barrel introduced in 1979. If yours is 6.0 inches then my guess is 1978 and one of the first off the line with the new barrel.
Best to start a new thread for valuations. In 2006 the Standard Catalog of S&W gave a value of $700 in excellent condition without box. I think picks of gun and box in a new thread will give a better idea of current values.
ruger1228:
Your Model 49 Bodyguard was manufactured in 1973. Built on the steel J frame, the Model 49 was produced from 1959 to 1996. The grips are correct for the gun and probably original.